include/asm-x86_64/compat.h

   1 #ifndef _ASM_X86_64_COMPAT_H
   2 #define _ASM_X86_64_COMPAT_H
   3
   4 /*
   5  * Architecture specific compatibility types
   6  */
   7 #include <linux/types.h>
   8 #include <linux/sched.h>
   9
  10 #define COMPAT_USER_HZ  100
  11
  12 typedef u32             compat_size_t;
  13 typedef s32             compat_ssize_t;
  14 typedef s32             compat_time_t;
  15 typedef s32             compat_clock_t;
  16 typedef s32             compat_pid_t;
  17 typedef u16             __compat_uid_t;
  18 typedef u16             __compat_gid_t;
  19 typedef u32             __compat_uid32_t;
  20 typedef u32             __compat_gid32_t;
  21 typedef u16             compat_mode_t;
  22 typedef u32             compat_ino_t;
  23 typedef u16             compat_dev_t;
  24 typedef s32             compat_off_t;
  25 typedef s64             compat_loff_t;
  26 typedef u16             compat_nlink_t;
  27 typedef u16             compat_ipc_pid_t;
  28 typedef s32             compat_daddr_t;
  29 typedef u32             compat_caddr_t;
  30 typedef __kernel_fsid_t compat_fsid_t;
  31 typedef s32             compat_timer_t;
  32 typedef s32             compat_key_t;
  33
  34 typedef s32             compat_int_t;
  35 typedef s32             compat_long_t;
  36 typedef u32             compat_uint_t;
  37 typedef u32             compat_ulong_t;
  38
  39 struct compat_timespec {
  40         compat_time_t   tv_sec;
  41         s32             tv_nsec;
  42 };
  43
  44 struct compat_timeval {
  45         compat_time_t   tv_sec;
  46         s32             tv_usec;
  47 };
  48
  49 struct compat_stat {
  50         compat_dev_t    st_dev;
  51         u16             __pad1;
  52         compat_ino_t    st_ino;
  53         compat_mode_t   st_mode;
  54         compat_nlink_t  st_nlink;
  55         __compat_uid_t  st_uid;
  56         __compat_gid_t  st_gid;
  57         compat_dev_t    st_rdev;
  58         u16             __pad2;
  59         u32             st_size;
  60         u32             st_blksize;
  61         u32             st_blocks;
  62         u32             st_atime;
  63         u32             st_atime_nsec;
  64         u32             st_mtime;
  65         u32             st_mtime_nsec;
  66         u32             st_ctime;
  67         u32             st_ctime_nsec;
  68         u32             __unused4;
  69         u32             __unused5;
  70 };
  71
  72 struct compat_flock {
  73         short           l_type;
  74         short           l_whence;
  75         compat_off_t    l_start;
  76         compat_off_t    l_len;
  77         compat_pid_t    l_pid;
  78 };
  79
  80 #define F_GETLK64       12      /*  using 'struct flock64' */
  81 #define F_SETLK64       13
  82 #define F_SETLKW64      14
  83
  84 /*
  85  * IA32 uses 4 byte alignment for 64 bit quantities,
  86  * so we need to pack this structure.
  87  */
  88 struct compat_flock64 {
  89         short           l_type;
  90         short           l_whence;
  91         compat_loff_t   l_start;
  92         compat_loff_t   l_len;
  93         compat_pid_t    l_pid;
  94 } __attribute__((packed));
  95
  96 struct compat_statfs {
  97         int             f_type;
  98         int             f_bsize;
  99         int             f_blocks;
 100         int             f_bfree;
 101         int             f_bavail;
 102         int             f_files;
 103         int             f_ffree;
 104         compat_fsid_t   f_fsid;
 105         int             f_namelen;      /* SunOS ignores this field. */
 106         int             f_frsize;
 107         int             f_spare[5];
 108 };
 109
 110 #define COMPAT_RLIM_OLD_INFINITY        0x7fffffff
 111 #define COMPAT_RLIM_INFINITY            0xffffffff
 112
 113 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 114
 115 #define _COMPAT_NSIG            64
 116 #define _COMPAT_NSIG_BPW        32
 117
 118 typedef u32               compat_sigset_word;
 119
 120 #define COMPAT_OFF_T_MAX        0x7fffffff
 121 #define COMPAT_LOFF_T_MAX       0x7fffffffffffffffL
 122
 123 struct compat_ipc64_perm {
 124         compat_key_t key;
 125         __compat_uid32_t uid;
 126         __compat_gid32_t gid;
 127         __compat_uid32_t cuid;
 128         __compat_gid32_t cgid;
 129         unsigned short mode;
 130         unsigned short __pad1;
 131         unsigned short seq;
 132         unsigned short __pad2;
 133         compat_ulong_t unused1;
 134         compat_ulong_t unused2;
 135 };
 136
 137 struct compat_semid64_ds {
 138         struct compat_ipc64_perm sem_perm;
 139         compat_time_t  sem_otime;
 140         compat_ulong_t __unused1;
 141         compat_time_t  sem_ctime;
 142         compat_ulong_t __unused2;
 143         compat_ulong_t sem_nsems;
 144         compat_ulong_t __unused3;
 145         compat_ulong_t __unused4;
 146 };
 147
 148 struct compat_msqid64_ds {
 149         struct compat_ipc64_perm msg_perm;
 150         compat_time_t  msg_stime;
 151         compat_ulong_t __unused1;
 152         compat_time_t  msg_rtime;
 153         compat_ulong_t __unused2;
 154         compat_time_t  msg_ctime;
 155         compat_ulong_t __unused3;
 156         compat_ulong_t msg_cbytes;
 157         compat_ulong_t msg_qnum;
 158         compat_ulong_t msg_qbytes;
 159         compat_pid_t   msg_lspid;
 160         compat_pid_t   msg_lrpid;
 161         compat_ulong_t __unused4;
 162         compat_ulong_t __unused5;
 163 };
 164
 165 struct compat_shmid64_ds {
 166         struct compat_ipc64_perm shm_perm;
 167         compat_size_t  shm_segsz;
 168         compat_time_t  shm_atime;
 169         compat_ulong_t __unused1;
 170         compat_time_t  shm_dtime;
 171         compat_ulong_t __unused2;
 172         compat_time_t  shm_ctime;
 173         compat_ulong_t __unused3;
 174         compat_pid_t   shm_cpid;
 175         compat_pid_t   shm_lpid;
 176         compat_ulong_t shm_nattch;
 177         compat_ulong_t __unused4;
 178         compat_ulong_t __unused5;
 179 };
 180
 181 /*
 182  * A pointer passed in from user mode. This should not
 183  * be used for syscall parameters, just declare them
 184  * as pointers because the syscall entry code will have
 185  * appropriately comverted them already.
 186  */
 187 typedef u32             compat_uptr_t;
 188
 189 static inline void __user *compat_ptr(compat_uptr_t uptr)
 190 {
 191         return (void __user *)(unsigned long)uptr;
 192 }
 193
 194 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 195 {
 196         return (u32)(unsigned long)uptr;
 197 }
 198
 199 static __inline__ void __user *compat_alloc_user_space(long len)
 200 {
 201         struct pt_regs *regs = task_pt_regs(current);
 202         return (void __user *)regs->rsp - len;
 203 }
 204
 205 static inline int is_compat_task(void)
 206 {
 207         return current_thread_info()->status & TS_COMPAT;
 208 }
 209
 210 #endif /* _ASM_X86_64_COMPAT_H */